Filesystems and case-insensitivity

https://en.wikipedia.org/wiki/Template:CJK_ideographs_in_... has a helpful list with the numbers of CJK codepoints, and I assume only the earliest ones were needed for legacy compatibility - the rest were presumably added because they couldn't already be represented. Recently Unicode 10.0 added "CJK Extension F" (7473 codepoints) so it seems they're still not finished. Then there's all the other scripts being added, like Tangut ("a major historic script of China") with another ~7000 codepoints. And about 1700 emojis (https://unicode.org/emoji/charts/emoji-list.html).

Maybe the 64K limit could have lasted for many more years if they had made some different design choices early on, but given the goal of being a universal standard for all text, it seems inevitable the limit would be broken eventually. It's better to have broken it earlier than later.